Alleles are alternate versions of gene(s) that have nucleotide sequences.

Aperson with age is more likely to catch diseases that healthy people usually don’t catch.what are these infections called?

In order to study genetic mutations, scientists must study genetic material. which statement describes the genetic material scientists are most likely studying? a) they study alleles that contain chromosomes, which are rna.b) they study alleles that contain genes, which are chromosomes.c) they study chromosomes that contain genes, which are dna segments.

Up to what percentage of the world's flora consisted of cycads during the triassic period? 100% 75% 50% 20%